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Finding the Fourth Proportional to 5,423.92, 7,484.97 and 2,939.92

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Solution

The fourth proportional to 5,423.92, 7,484.97 and 2,939.92 is: 4,057.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,423.92 : 7,484.97 = 2,939.92 : x
  2. Step 2: Convert to fraction form
    5,423.92/7,484.97 = 2,939.92/x
  3. Step 3: Cross multiply
    5,423.92x = 7,484.97 × 2,939.92
  4. Step 4: Simplify right side
    5,423.92x = 22,005,213.00
  5. Step 5: Solve for x
    x = 22,005,213.00/5,423.92
  6. Step 6: Final answer
    x = 4,057.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.